Surachai Sutha

US Patent:

7742620, Jun 22, 2010

Filed:

Mar 18, 2004

Appl. No.:

10/555104

Inventors:

Hai-Wen Chen - Orlando FL, US
Teresa L. Olson - Winter Garden FL, US
Surachai Sutha - Kissimmee FL, US

Assignee:

Lockhead Martin Corporation - Bethesda MD

International Classification:

G06K 9/00

US Classification:

382103, 382147, 382149, 382312

Abstract:

A method for identifying potential targets as far away as possible is disclosed. In a simple background scene such as a blue sky, a target may be recognized from a relatively long distance, but for some high clutter situations such as mountains and cities, the detection range is severely reduced. The background clutter may also be non-stationary further complicating the detection of a target. To solve these problems, target detection (recognition) of the present invention is based upon temporal fusion (integration) of sensor data using pre-detection or post-detection integration techniques, instead of using the prior art technique of fusing data from only a single time frame. Also disclosed are double-thresholding and reversed-thresholding techniques which further enhance target detection and avoid the shortcomings of the traditional constant false alarm rate (CFAR) thresholding technique. The present invention further discloses improved spatial fusion techniques for target detection (recognition) employing multiple sensors instead of employing the more conventional single sensor techniques. If spatial fusion is implemented with more than three sensors, then target detection can be enhanced by also using post-detection techniques.

US Patent:

62981625, Oct 2, 2001

Filed:

Feb 21, 1995

Appl. No.:

8/391263

Inventors:

Surachai Sutha - Orlando FL
Dan T. Long - Orlando FL

Assignee:

Lockheed Martin Corporation - Bethesda MD

International Classification:

G06K 936

US Classification:

382234

Abstract:

A fast method with logarithmic complexity for image compression and expansion is provided, implementable on the Geometric Arithmetic Parallel Processor (GAPP) or any similar fine-grained, mesh-connected Single Instruction-Multiple Datastream (SIMD) array processor. Efficient decomposition of the original image into multiple subimages enables the method to exploit the parallelism of the SIMD computer for implementing powerful multiresolution pyramid and hierarchical image processing techniques on a massively parallel processor.

US Patent:

61856673, Feb 6, 2001

Filed:

Apr 9, 1998

Appl. No.:

9/057468

Inventors:

Andrew P. Abercrombie - Winter Park FL
Surachai Sutha - Orlando FL
Wlodzimierz Holsztynski - Mountain View CA

Assignee:

TeraNex, Inc. - Orlando FL

International Classification:

G06F 1500

US Classification:

712 11

Abstract:

An apparatus for processing data has a Single-Instruction-Multiple-Data (SIMD) architecture, and a number of features that improve performance and programmability. The apparatus includes a rectangular array of processing elements and a controller. The apparatus offers a number of techniques for shifting image data within the array. A first technique, the ROLL option, simultaneously shifts image planes in opposite directions within the array. A second technique, the gated shift option, makes a normal shift of an image plane to neighboring PEs conditional, for each PE, upon a value stored in a pattern register of each PE. A third technique, the carry propagate option, combines the computations from multiple PEs in order to complete an n-bit operation in fewer than n clocks by forming "supercells" within the array. The apparatus also includes a multi-bit X Pattern register and a multi-bit Y Pattern register. These registers have bit values corresponding to respective columns (for the X Pattern register) and rows (for the Y Pattern register) of the array.